Persistent identifiers (PID)

The Finnish Research Infrastructures -service offers persistent identifiers for the research infrastructures it contains descriptions for.

Why to use persistent identifiers?

Using persistent identifiers for research infrastructures has the following advantages:

  • Infrastructures are precisely identifiable
  • The findability of infrastructures and their services improves both within and between organizations
  • Evaluation of effectiveness becomes easier
  • Enables academic merit for infrastructure service providers
  • Persistent identifiers are a reliable solution for automated data transfer between information systems and organizations and data enrichment
  • Complements the research information entity as scientific publications, research datasets and researchers themselves already have persistent identifiers


Persistent identifier

Persistent identifier is a unique, object-specific character string, which is used to make clear references to the object. The persistent identifier is assigned to the object for its entire lifecycle. There are numerous identifier systems for digital data, such as Uniform Resource Name (URN) or Digital Object Identifier (DOI). Resolver services offer a way for persistent identifiers to act as functional identification, i.e., persistent links in the web.

The Finnish Research Infrastructures service uses URN identifiers for infrastructures. The format for URN-identifiers in the service is


where yyyy = year, mm = month, dd = day and n = a sequential number.

These URN-identifiers can be identified and their meaning can be resolved through the -service of National Library of Finland. From there the identifiers are used to direct the user to the infrastructure descriptions in the Finnish Research Infrastructures -service.